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automotive wiring question

Posted on 6/5/24 at 10:20 am
Posted by Sam Quint
Member since Sep 2022
8296 posts
Posted on 6/5/24 at 10:20 am
i had to run new wires to the fuel pump in my Jeep and i'm not sure the best way to protect the connection. from the location where i connected the new wires to the old down to the fuel pump i ran the wires through that split tubing / sheathing. i'm just not sure how to protect the actual spot where i connected the new to the old. i used waterproof quick connect terminals for the connection, so the "clump" doesnt fit inside the tubing. should i just wrap with some high temp wiring harness tape? i dont mess with electrical stuff much so i'm just sort of winging it here.
Posted by Redlos
Baton Rouge
Member since Jul 2005
1171 posts
Posted on 6/5/24 at 10:26 am to
Marine grade butt connectors with individual shrink wrap tubing, then another shrink wrap over the whole thing.

You can stagger the butt connectors so they aren’t at the same spot to minimize the bulge in the wires.

Whole thing inside flex loom. Harbor Freight is your friend.
Posted by Dallaswho
Texas
Member since Dec 2023
3467 posts
Posted on 6/5/24 at 11:06 am to
Just a simple crimp or solder/heat shrink is fine for a car. If you want to go crazy, get some RTV silicone, but it is a car and not a spaceship.
Posted by Turnblad85
Member since Sep 2022
4941 posts
Posted on 6/5/24 at 11:25 am to
quote:

Just a simple crimp or solder/heat shrink is fine for a car. If you want to go crazy, get some RTV silicone, but it is a car and not a spaceship.




Someone hasn't had to track down a corroded connection before.

"Any given car is 3 bad electrical connections away from being scrapped"---Unknown



Adhesive lined heat shrink is great. They also make some insulated butt connectors that have adhesive in them as well. Adhesive/sealant.

My favorite is 3M non-insulated bare connectors crimped with a quality ratcheting tool and topped with 3M adhesive lined shrink wrap. That ends up costing quite a bit by the time you get set up with that stuff though.
Posted by Dallaswho
Texas
Member since Dec 2023
3467 posts
Posted on 6/5/24 at 11:36 am to
quote:

My favorite is 3M non-insulated bare connectors crimped with a quality ratcheting tool and topped with 3M adhesive lined shrink wrap. That ends up costing quite a bit by the time you get set up with that stuff though.


You can get boots for those also. No point in using a calibrated hi-rel crimp tool with automotive spec wire though. In my opinion, that would do more harm than.good. Just solder and shrink if you want it to last.
Posted by Sam Quint
Member since Sep 2022
8296 posts
Posted on 6/5/24 at 12:27 pm to
Thanks for the replies

quote:

You can stagger the butt connectors so they aren’t at the same spot to minimize the bulge in the wires.

I used marine grade quick connects, but I didn't stagger them.. Didn't think about it until later. I think I'll just individually shrink wrap them and then wrap the whole clump and call it good.

These are the kind I used, give or take (not the exact brand, just that style):

LINK
This post was edited on 6/5/24 at 12:30 pm
Posted by Macfly
BR & DS
Member since Jan 2016
10181 posts
Posted on 6/5/24 at 12:40 pm to
Give the connectors a thin coat of dielectric grease before assembly to help prevent weathering/corrosion. You don't need much grease for the job.
Posted by Redlos
Baton Rouge
Member since Jul 2005
1171 posts
Posted on 6/5/24 at 9:09 pm to
Does it need to have plugs? If not go with a permanent crimp or solder
Posted by chrome1007
Toledo Bend
Member since Dec 2023
584 posts
Posted on 6/6/24 at 6:09 am to
Redlos nailed it…..
This post was edited on 6/6/24 at 6:10 am
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